When i create a JPanel and add it to my JFrame and add my canvas to it (space) it will show just the JPanel and not the any of the graphics. Why is it only showing the JPanel when i want it to show both of them at the same time?
Source Code:http://pastebin.com/Cw9E0a8j
If youre intent was to add the your canvas inside the jPanel you try change the following lines in your source
Original Code :
frame.add(p);
frame.add(space, BorderLayout.CENTER);
Suggested Code :
p.add(space);
frame.add(p, BorderLayout.CENTER);
If You are willing to view both JPanel and the canvas in the JFrame try giving positioning to the canvas also.But a different layout will do better. Try out the given example.
Original Code :
frame.setLayout(new BorderLayout());
frame.add(p);
frame.add(space, BorderLayout.CENTER);
Suggested Code 1 :
By providing the position to the JPanle in the Border Layout.
frame.setLayout(new BorderLayout());
frame.add(p, BorderLayout.NORTH);
frame.add(space, BorderLayout.CENTER);
Suggested Code 2 :
By Changing the Layout of the JFrame.
frame.setLayout(new GridLayout(0,2));
frame.add(p);
frame.add(space);
For more information please refer official documentation[1].
[1]. https://docs.oracle.com/javase/tutorial/uiswing/layout/index.html
The solution is very simple. In your code you are placing the 'space' in the center of the window, therefore you are telling it to take up the whole screen. What you should do is this.
frame.add(p, BorderLayout.EAST);//EAST for the rigth
frame.add(space, BorderLayout.WEST);//WEST for the left
Related
I recently found out that you can put a JPanel inside another JPanel, I tried it and it didn't quite do what I expected.I'm trying to have one button in the center and one button on the bottom right of the panel, I'm using a BorderLayout for all my panels.When I tried using two panels inside the center panel, the two panels were on the same line, but I've coded that one needed to be on the top and one on the bottom.Does anyone know how I could resolve this?
Sorry for not adding the code in the place, wasn't sure and I had already deleted it so I quickly made this, it is the same code I used in my project.
My code:
JFrame frame = new JFrame();
JButton btn = new JButton();
JPanel center = new JPanel();
JPanel top = new JPanel();
JPanel bot = new JPanel(new FlowLayout(FlowLayout.RIGHT));
bot.add(btn);
center.add(top, BorderLayout.PAGE_START);
center.add(bot, BorderLayout.PAGE_END);
frame.add(center, BorderLayout.CENTER);
When I use this code, "bot" is going to be displayed on the right of "top".
I think it has to do with the layout of "center" but I'm not sure.
Set the LayoutManager of center to BorderLayout, with this method:
center.setLayout(new BorderLayout());
This is my first swing application. I'm trying to create an window and add a button. On clicking the button, it should display some value on the console. Everythign works fine, but the window is very small. I've specified 800*600, but then also the window size is small, that is its wrapping the button size only.
Here is my code snippet:
JFrame frame = new JFrame("My Application");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container contentPane = frame.getContentPane();
contentPane.setLayout(new BorderLayout());
contentPane.add(new MyClass(), BorderLayout.CENTER);
frame.setSize(800, 600);
frame.pack();
frame.setVisible(true);
Snippet from MyClass.java:
setLayout(new GridBagLayout());
JButton button = new JButton("Button");
button.addActionListener(this);
add(button);
How to make the window size as 800*600?
The pack() method should always be called on a GUI based on a JFrame, so leave that in. It reduces the GUI to the smallest size needed to display the components in it. But don't go calling setSize(Dimension) after that, before checking it is larger than the minimum size.
Remove frame.pack(); from your code.
More information:
http://docs.oracle.com/javase/tutorial/uiswing/components/frame.html
http://docs.oracle.com/javase/6/docs/api/java/awt/Window.html#pack%28%29
You are calling pack method. The api said: "It causes this Window to be sized to fit the preferred size and layouts of its subcomponents"
You haven't specified the preferred size. Try it doing this:
frame.setPreferredSize(new Dimension(800,600));
I made a basic game on a JFrame and I'm currently trying to add a scoreboard on top my frame by using two separate JPanels. I tried to do it with WindowBuilder but the problem is that my GameFrame class component isn't shown fully in the game frame. It looks like this:
The code is as follows:
JFrame frame = new JFrame("Game");
frame.setSize(500, 700);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
frame.setLocationRelativeTo(null);
frame.getContentPane().setLayout(null);
JPanel panel = new JPanel();
panel.setBounds(0, 100, 500, 600);
panel.add(new GameFrame());
frame.getContentPane().add(panel);
frame.setVisible(true);
How can I solve the problem?
A JPanel uses FlowLayout by default which respects preferred sizes. As its unlikely that this is currently overridden for your GameFrame component class, you need to use a layout manager which uses the maximum area available
panel.setLayout(new BorderLayout());
I think setting the layout to null is this issue. Set a proper Layout as shown below
frame.setLayout(new GridLayout(1,1));)
Have you tried one of these: http://docs.oracle.com/javase/tutorial/uiswing/layout/visual.html ?
If so, what's not working?
A BorderLayout could be useful if you want the scoreboard along the top, by using panel.add(new ScoreBoard(), BorderLayout.PAGE_START) for example.
Now i already have a panel with 25 Jbutton and its shows on the frame, but i neeed other panel with other information so i created another panel and add to this a button for example. But the location of this a dont know how to set it. Some advice for this. Remember i have other panel and i want the new one on the left side from panel with buttons
JPanel panel = new JPanel();
panel.setSize(100,100);
jPanel.setBorder(new TitledBorder(new EtchedBorder(), "hi"));
JButton b = new JButton("test");
panel.add(b);
frame.getContentPane().add(panel);
To add your new panel on the left hand side of the JFrame, you can simply add it to the BorderLayout.WEST location:
frame.add(panel, BorderLayout.WEST);
hello now i already know how to set it, at the moment to add to the contentpanel add .setlocation(x,y) it works for me. Play with the pixels and make your frame as you want
So, I'm trying to learn Java Swing and custom components. I've created a JFrame, given it a background color, and added a JPanel:
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(1000, 2000);
frame.setBackground(Color.WHITE);
JPanel jp = new JPanel();
jp.setBackground(Color.BLUE);
jp.setSize(40, 40);
frame.add(jp);
frame.setVisible(true);
The result is a 1000x2000 window colored blue (as opposed to a white window with a 40x40 blue box inside it). Why is the JPanel expanding beyond its specified size?
Using your code, simply add one line to change the LayoutManager of the JFrame. Then, when you add the component, it will keep it's preferred size.
Also, instead of calling jp.setSize(40,40), call jp.setPreferredSize(new Dimension(40,40)).
And, you need to call pack() on the JFrame to tell it to layout its components.
JFrame frame = new JFrame("Testing");
frame.setLayout(new FlowLayout()); // New line of code
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setPreferredSize(new Dimension(1000, 2000)); // Modified line of code
frame.setBackground(Color.WHITE);
JPanel jp = new JPanel();
jp.setBackground(Color.BLUE);
jp.setPreferredSize(new Dimension(40, 40)); // Modified line of code
frame.add(jp);
frame.pack(); // added line of code
frame.setVisible(true);
Also, you should read up on all of the different LayoutManagers available to you. Here is a great tutorial.
The default layout manager for a JFrame is BorderLayout. When you add a component to the frame without constraints, it uses BorderLayout.CENTER as the default constraint. This means the component takes up all available space, regardless of its requested size.